A127229
a(n)= numerator of ((n + 5)! - (n - 5)!)/(n!).
Original entry on oeis.org
3628799, 39916799, 239500799, 1037836799, 3632428799, 10897286399, 29059430399, 70572902399, 158789030399, 335221286399, 670442572799, 1279935820799, 2346549004799, 4151586700799, 7117005772799, 11861676287999, 19275223967999, 30613591007999, 47621141567999
Offset: 5
A127230
a(n) = (2n)! - 1.
Original entry on oeis.org
1, 23, 719, 40319, 3628799, 479001599, 87178291199, 20922789887999, 6402373705727999, 2432902008176639999, 1124000727777607679999, 620448401733239439359999, 403291461126605635583999999, 304888344611713860501503999999, 265252859812191058636308479999999
Offset: 1
A127227
a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!).
Original entry on oeis.org
719, 5039, 20159, 60479, 151199, 332639, 665279, 1235519, 2162159, 3603599, 5765759, 8910719, 13366079, 19535039, 27907199, 39070079, 53721359, 72681839, 96909119, 127511999, 165765599, 213127199, 271252799, 342014399, 427517999
Offset: 3
A127231
a(n) = (2n)! + 1.
Original entry on oeis.org
2, 3, 25, 721, 40321, 3628801, 479001601, 87178291201, 20922789888001, 6402373705728001, 2432902008176640001, 1124000727777607680001, 620448401733239439360001, 403291461126605635584000001, 304888344611713860501504000001, 265252859812191058636308480000001
Offset: 0
Showing 1-4 of 4 results.